AUTONOMEA. 113 



front in a small tooth projecting forwards ; two keels on the 

 outer surface of the claw, the lower one having a short 

 tooth ; the movable finger not shorter than the immovable 

 one, flattened on the sides, and broad at the point; the 

 immovable finger triangular, strong, and forming a kind of 

 socket, into which the opposing finger fits by a tubercle at 

 its end; lesser pincer with a toothed keel on its upper 

 edge, equal in length to the others, but thinner, narrower, 

 and much less robust; second pair of legs didactyle, slen- 

 der, and having the wrist many-jointed. 

 Hab. Islet of Herm (Channel Islands). 



Gen. 40. AUTONOMEA, Risso. 



First pair of legs only with two toes. Inner antennae 

 double, one filament longer and thicker than the other; 

 outer antennae much longer than the bodv. 



Atjtonomea Oljvii, Eisso. Long-homed Shrimp. — 

 Body smooth, semitransparent, yellowish. First pair of legs 

 fine red above and clear yellow beneath ; outer antennae 

 whitish. 



Mr. Couch records this in his ' Cornish Fauna ' with the 

 following observation : — " This species has been hitherto 



i 



